US Senator Max Baucus plans to retire.

Baucus called the decision not to run again the most difficult on in his life and now there is a great deal of buzz about the 2014 senate race.

NBC Montana hit the streets Tuesday afternoon to find out what people think about a possible Schweitzer Rehberg face-off.

The people we talked with in Missoula say a Schweitzer Rehberg race would not only be costly but heavily watched.

“I think it would be, probably one of the most interesting races in Montana history,” said Merle Johnson, a retired history teacher at Frenchtown High School.        

Johnson says with both candidates having served Montana for so long, it could be a close race.

“Rehberg has got a lot of financial backing and well so does Schweitzer,” said Johnson.  “Yet I think Rehberg has a lot of money through the Republican Party available to him.”

Former US Congressman Pat Williams also weighed in and predicted Rehberg will vie for the senate seat Baucus is vacating.

Williams tells NBC Montana he's looking forward to the candidate announcements.

“A Schweitzer Rehberg race would be one of the most exciting races Montana's had in a very long time,” said Williams.  “It'd be a joy to behold.”

“I think the Montana population would be pretty well split on who would be the best candidate,” said Johnson. 

Johnson said its history in the making. 

“I think it would be really close,” he said.  “I really do.”

A quick reminder that this is all speculation and we're all waiting with anticipation about who will actually throw their hat in the ring.